CAMERON DIAZ

She seems to be over her tear-inducing haircut! The is all smiles as she rocks her shorter do against the supersexy draped back of her Stella McCartney beaded organic silk gown, worn with a perforated metal clutch, also by the designer, Casadei heels and Fred Leighton earrings.

EMMA STONE

“It’s a waterproof dress,” Lanvin designer Alber Elbaz ( date for the night) said of the actress’s ultragirlie floral mini, covered with about 3,000 plastic flowers and red crystals and worn with black pumps, also by the line.

BEYONCé KNOWLES

The World’s Most Beautiful Woman easily hangs on to her title in a majorly sheer Givenchy Haute Couture by Riccardo Tisci embroidered gown with a jaw-dropping purple ombré train. Well, that’s one way to show you’ve lost all the baby weight, !

GWYNETH PALTROW

“I just want to wear things that are me in different ways,” the says of her dressing philosophy – as evidenced by her pale lilac Prada dress embellished with paillettes on the pockets, Prada shoes and major Anna Hu hoops.

ASHLEY GREENE

She may not consider herself a fashion icon, but the is doing a good job of convincing everyone she is in her ethereal, custom-designed, Donna Karan Atelier snow-white gown with sequin beading, plus Casadei heels, a Judith Leiber clutch and Jacob & Co. gems.

JESSICA BIEL & JUSTIN TIMBERLAKE

On the arm of her , the opts for a tea-length blush sheath, coordinating shoes and clutch (“that Mrs. Prada picked for me,” she said), plus $2 million of Lorraine Schwartz gems. Justin makes fine arm candy in a Cartier watch and a tux by Tom Ford, about whom he says, “He’s a beautiful man, and he makes beautiful suits.”

TOM BRADY & GISELE BÜNDCHEN

Though it’s hard to draw attention away from his bombshell – especially when she’s wearing a slit-to-there beaded Givenchy Haute Couture by Riccardo Tisci gown with killer sandals and David Yurman jewelry – the football player manages to grab (some of) the spotlight with his asymmetrical do.

SOFIA VERGARA

“Usually these dresses are made for supermodels, so I have to trick them a little bit!” the Modern Family giggles about her silver embroidered Marchesa gown, worn with Casadei pumps and Harry Winston jewels.

JANUARY JONES

“I like to lean toward the avant-garde,” said the Mad Men actress, who offsets her superhero-esque, sculptural lemon Versace gown with a vintage diamond-and turquoise necklace and golden clutch (both by Cartier) and coral lips.

ROSIE HUNTINGTON-WHITELEY

Proving once again why she’s the body of Burberry, the supermodel cuts an enviable figure in a striped dress by the line with a beaded collar and adds a hard-sided House of Harlow 1960 clutch, J/Hadley ring and glam Irene Neuwirth earrings.

CATE BLANCHETT

One of many stars who chose to ruffle feathers – on their dresses, of course – during the evening, Cate makes a striking entrance in a floaty trumpet-hem black Alexander McQueen gown worn with Van Cleef & Arpels jewels and a black minaudière.

EVA MENDES

Leaving beau at home, the joins the many stars who opted for peplum at the event – though her ensemble easily stands out, thanks to whimsical embroidery and a two-tone clutch (all by Prada) plus a David Webb ring and Fred Leighton earrings.

MARY-KATE OLSEN

A designer herself, celebrates the two similarly avant-garde women of the Met exhibition (Elsa Schiaparelli and Miuccia Prada) with a Victorian-inspired, high-neck black silk gown, plus an antique clutch and jewels by Fred Leighton.

RACHEL ZOE & KAROLINA KURKOVA

The stylist turned designer wears a fringed gown of her own creation with a massive statement choker by David Webb, and dresses the supermodel in a rose gold Rachel Zoe Collection gown with a matching turban and oodles of Fred Leighton gems.

SARAH JESSICA PARKER

“I’m wearing Valentino because I love this dress. It reminded me of a different time,” the says of her formal, floral-accented ball gown, worn with matching pumps and golden Fred Leighton cuffs to accompany the designer on the carpet.

CAREY MULLIGAN

“They sent sketches and I was blown away by them. I’m really honored to be wearing it,” the event cochair (and newlywed!) gushes of her golden-and-silver paillette Prada frock, worn with shoes by the line and Neil Lane diamonds.

MARION COTILLARD

Mixing elegant ombré with a superdaring sheer skirt, the French beauty is boldly sexy and sophisticated in Dior Haute Couture – and she wisely keeps the rest of her look, including a diamond Chopard watch, simple.

RENéE ZELLWEGER

“It’s so comfortable, it’s unbelievable!” the actress raves of her sheer-paneled Emilio Pucci gown with a dramatic organza train, which she wears with massive diamond chandelier earrings and a yellow gold ring, all by David Webb.

JESSICA CHASTAIN

After taking some time off from her red carpet chic streak, the star makes a stunning return to the scene in a beaded, corseted steel blue Louis Vuitton gown, $1 million worth of Harry Wisnton diamonds, pin curls and deep maroon lips.

ALICIA KEYS

Forgoing a gown for a slim-fitting Givenchy Haute Couture by Riccardo Tisci tux – made slightly more girlie with open-toe booties and vintage-feeling jewels (including a Pomellato ring) – the turns the gala into a glam date night with husband Swizz Beatz.

ELIZABETH BANKS

Taking print mixing to the next level and causing jaws to drop, the Hunger Games star makes a major style statement in a plaid peplum dress with a capelike addition and sparkly Christian Louboutin sandals. She added gold-and-diamond gems and a red enamel clutch, all by Cartier.

LA LA ANTHONY

One of the few wearing electric blue (in the form of a Zac Posen with intricate bodice detailing), plus sleek Mizuki drop earrings and a Forevermark ring, the star arrives with her New York Knicks hubby Carmelo Anthony.

AMBER HEARD & ZAC POSEN

“I’m so happy to be with a designer that I love,” the actress gushes of her elaborate orchid-hued bustier gown’s creator (and coordinating date for the evening!). She finishes her look with Tiffany & Co. jewels and Christian Louboutin heels.

COCO ROCHA

The dresses inside the museum aren’t the only ones with a history: The model’s chartreuse Givenchy jumpsuit (worn with pink satin Sergio Rossi pumps, a Kotur clutch and Wilfredo Rosado gems) was previously owned by Elizabeth Taylor and won by the model at Taylor’s record-setting Christie’s auction – complete with an original wine stain.

SOLANGE KNOWLES & RACHEL ROY

Both wearing streamlined, vividly hued Rachel Roy dresses, the DJ and the designer set off their sleek silhouettes with bright clutches (Solange’s is Edie Parker; her shoes are Christian Louboutin) and stylish jewels (Solange wears Solange Azagury-Partridge).

DEBRA MESSING

KATHERINE MCPHEE

The star revealed she tried on a lot of dresses for the event but ultimately went with this stunning orange beaded Elie Saab gown, which she paired with a Christian Louboutin clutch and jewelry by Lorraine Schwartz and Ofira.

LANA DEL REY

“We wanted to do something that would be a little dark and glamorous,” designer Joseph Altuzarra says of the sparkling silver bustier gown he whipped up for the singer, which she accents with a showstopping cape.

MILLA JOVOVICH

Also in Prada for the designer’s big night, the model/actress gets fringe benefits from her scarlet-and-black gown, playing peekaboo behind the long slit skirt. She finishes the look with Jacob & Co. gems.

HILARY SWANK

Attending with Michael Kors, the actress cuts a sleek silhouette in a burgundy turtleneck gown, golden clutch and sandals (all by the designer) and polishes off the look with loose waves and golden Fred Leighton gems.

LESLIE BIBB

No skirting the issue here: The actress makes a major entrance in a printed Zac Posen ball gown and JustFab clutch, blinged out with coordinating sapphire Lorraine Schwartz earrings and ring and an Ofira bracelet.